This information covers only non–small cell lung cancer. There are subtypes of NSCLC, which start from different types of lung cells. But they are grouped together as NSCLC because the approach to treatment and prognosis (outlook) are often similar. Adenocarcinoma: About 40% of lung cancers are adenocarcinomas.
SCLC rapidly spreads (metastasizes) to other organs much faster than NSCLC types, and microscopically, SCLC are composed of much smaller cells. SCLC can be fatal in a few weeks if untreated, in contrast to most cases of NSCLC with metastases. SCLC counts for about 15%-20% oflung cancers.
Both cancers affect the lungs but they have several key differences, including how they are treated and their average progression time. Small cell cancer is true to its name. … There are several different types of non–small cell lung cancers. These include adenocarcinoma, squamouscell, and large cell carcinoma.